Combination fitting



Nov. 3, 1931. H. .1. LUFF ET AL COMBINATION FITTING Filed April 1, 1929 mwf m W W L M N A M nw m w? Patented Nov. 3, 1931 UNITED STATES PATENT OFFICE HENRY J. L'UFF AND WILLARD J. L'UFF, F GLEV ELAND HEIGHTS, OHIO; SAID HENRY J. LUFF ASSIGNOR '10 SAID WILLARD J. LUFF comma'rron FITTING Application filed April 1, 1929. Serial No. 351,667.

The present invention relates, as indicated, to a combination fitting, and more spec1fica1- ly to a fitting adapted to be installed to con modification for either right or left hand use. Further objects of the invention will appear as the description proceeds. To the accomplishment of the foregoing and related 7 ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawings and the following des ription set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings:

Fig. 1 is a vertical section through a fitting of the character described; and Figs. 2 and 3 are end elevations of said fitting on a reduced scale, illustrating two possible positions thereof.

In certain localities, the sanitary regula- 39 tions-require that two waste systems shall be provided in buildings, one for storm disposal and the other for soil disposal, and the regulations require that one of these systems shall, wherever the piping runs substantially horizontally, be disposed above the other. Ordinarily, such systems are disposed also in different vertical planes. The fitting of the present invention is designed to join the lower ends of these two systems to a single waste pipe either adjacent the bottom of the building or outside the building so that onlv a single pipe need be run to the sewer. Obviously, the leg or main body of the fitting must have a greater internal crosssectional area than has either of the branches.

Referring more particularly to the drawings, it will be seen that we have provided a fitting indicated generally at 10 having a 50 body portion 11 and a pair of branches 12 and 13 of reduced cross section. It will likewise be seen that the outer ends 14 and 15 of the branches 12 and 13 respectively are paraxial, I

and that the axes of said outer ends are ofi-set from the axis of the main body portion 11 and are parallel thereto, the axis of the end 14; being spaced considerably farther from the axis of the body portion 11 than is the axis of the end 15.- As a result of this arrangement, it will be noted that the point of division 16 between the branches 12 and 13 is spaced from the axis of the body portion 11 and is on the same side thereof as the branch 12.

As a result of this construction there are most portion 17 of said branch may be disposed upon the same level as the lowermost portion 16 of the body portion, while the lowermost portion of the end 14 of the branch 12 is disposed above that level. Figs. 2 and 3 illustrate two such positions.

In the diagram the lines KK, LL and MM indicate the axes of the outlet and the two inlet ends of the fitting respectively. In Fig. 2 the plane AB is horizontal and may be regarded as representing the surface on which the fitting would rest when the branch 12 is inclined to the right, as there shown. This plane is tangent to the interior surfaces of the outlet K and inlet L, the point at which the rear edge of the inner surface of the outlet lies in plane AB being indicated at R and the corresponding point for the outlet L being indicated at S. In this figure the axes L, K and M are seen endwise and therefore appear as points as indicated. Another plane CD which makes the same angle with AB as the angle through which the fitting is adapted to be turned between the right hand position of Fig. 2 and the left hand position of Fig. 3 touches the rear edge of the inner surface of K at the point T and the corresponding point of the outlet L at the oint U. Thus the lines R-S and TU he respectively within the planes AB and CD. The plane HG parallel to AB and the plane RF parallel to CD are included in the figure for certain explanatory purposes. All of these planes are parallel to all three of the axes KK, LL and MM.

In Fig. 3 it will be seen that the fitting has been swung through an angle of 90 so as to take the building drain in from the other side of the storm drain. Thus in Fig. 3 the .various planes, lines and points all occupy be p the same mutual positions as in Fig. 2, but the plane CD has become the floor plane.

Thus we have provided a fitting so constructed that the branch 13 may be connected to the lowermost of two such waste pipes as we have described, while the branch 12 is connected to the uppermost of such waste pipes, the two wast pipes being disposed in different vertical planes, and regardless of whether the uppermost pipe is disposed to the rightor to the left of the vertical plane including the lowermost pipe, the fitting provides a straight-through flow from the lowermost pipe, eliminating any shoulder between the lowermost waste pipe andthe body portion of the fitting. A further and very important advantage of the present construction lies in the economy of height resulting from the peculiar construction of the fitting, the center of the branch end 15 being so chosen with respect to the axis of the body portion 11 as to give o the installed fitting a minimum height consistent with the sizes of the body and branches and the use of branch pipes. It will, of course, be understood that it is essential that the two branch ends 14 and 15 be so located with respect to each other as to permit branch pipes connected thereto to cross each other without interference and without the necessity of deviation from a straight line. From an inspection of Figs. 2 and 3, it will be obvious that, when the fitting is installed in such a position that the lowermost portion 16 of the body portion 11 and the lowermost portion 17 of the branch end 15 are on the same level, a horizontal line drawn tangentto the periphery of the branch end 15 is likewise tangent to the periphery of the branch end 14.

Other modes of applying the principle of our invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

We therefore particularly point out and distinctly claim as our invention:

1. A combination fitting comprisin portion, and a pair of branches, said parts elng so arranged that, when the lowermost portion of the interior surface of one of said ranches lies in the same plane with the lowermost portion "of the interior surface of said body portion, the uppermost portion of the periphery of one of air branch ends and the lowermost portio.. of the periphery g a-body of theother of said branch ends lie in a common plane parallel to said first-named plane.

2. A combination body portion, and a pair of branches, the outer ends of said branches being eccentric with respect to said body portion, said parts ing so arranged that, when the lowermost portion of the interior surface of one of saidbranches lies in the same plane with the lowermost portion of the interior surface of said body portion, the uppermost portion of the periphery of one of said branch ends and the lowermost portion of the periphery of the other of said branch ends lie in a common plane parallel to said first-named plane.

3. A combination fitting having an end opening and a pair of branch openings,.one of said branch openings being paraxial with said end opening and having a cross section smaller than that of said end opening, said end opening and said one branch opening being so arranged that each of two planes tangent to an interior surface of said end opening and said branch opening is also continuously tangent to the interior surface therebetween.

4. A combination fitting having an end portion and a pair of branches paraxial with said end portion, one of said branches having a cross section smaller than that of said end portion, and said end portion and said one branch being so arranged that each of two planes tangent to the interior surface of said end portion and said branch is also continuously tangent to an interior surface therebetween, the other branch having the outside of its connection end disposed entirely beyond each of two planes tangent to the outside of the connection end of the said one branch and respectively opposite and parallel to each of the first-mentioned planes.

5. A combination fitting having an end portion and a pair of branches paraxial with said end portion, one of said branches having a cross section smaller than that of said end portion, and said end portion and said one branch being so arranged that each of two planes tangent to the interior surface of said end portion and said branch is also continuously tangent to an interior surface therebetween, the other branch having the outside of its connection end tangent to and disposed entirely beyond each of two planes tangent to the outside of the connection end of the said one branch and respectively opposite and parallel to each of the first-mentioned planes.

6. A combination fitting having an end portion and a pair of branches paraxial with said end portion, one of said branches having a cross section smaller than that of said end portion, and said end portion and said one branch being so arranged that each of two planes tangent to the interior surface of said end portion and said branch is also continufitting comprising a.

ea er? ously tangent to an interior surface therebetween, the other branch having the outside of its connection end disposed entirely beyond each of two planes tangent to the outside of the connection end of the said one branch and respectively opposite and parallel to each of the first-mentioned planes, also beyond planes passing between said branches and tangent to the outside of the first branch and respectively perpendicular to each of the two first-mentioned planes.

7. A combination fitting comprising a body portion, an outlet portion and a pair of inlet portions, one of said inlet portions and said outlet portion having parallel axes, said parallel inlet portion having a cross section smallerthan that of said outlet portion, an interior surface of said body portion between the said one inlet portion and said outlet portion being continuously tangent to two planes, eachof which is parallel to said parallel axes and tangent to an interior surface of both said outlet portion and said one inlet portion.-

Signed by us this 29th da of March, 1929.

HENR J. LUFF. WILLARD l LUFF. 

